想要在springboot启动后马上做些事情？源码告诉你怎么实现

话不多说，直接上源码。（springboot的启动源码不再过多阐述了哈，感兴趣的朋友可以自行查看源码或查看我的另一篇博文《springboot2.0启动原理源码剖析》）

public ConfigurableApplicationContext run(String... args) {
	StopWatch stopWatch = new StopWatch();
	stopWatch.start();
	ConfigurableApplicationContext context = null;
	Collection exceptionReporters = new ArrayList<>();
	configureHeadlessProperty();
	SpringApplicationRunListeners listeners = getRunListeners(args);
	listeners.starting();
	try {
		ApplicationArguments applicationArguments = new DefaultApplicationArguments(
				args);
		ConfigurableEnvironment environment = prepareEnvironment(listeners,
				applicationArguments);
		configureIgnoreBeanInfo(environment);
		Banner printedBanner = printBanner(environment);
		context = createApplicationContext();
		exceptionReporters = getSpringFactoriesInstances(
				SpringBootExceptionReporter.class,
				new Class[] { ConfigurableApplicationContext.class }, context);
		prepareContext(context, environment, listeners, applicationArguments,
				printedBanner);
		refreshContext(context);
		afterRefresh(context, applicationArguments);
		stopWatch.stop();
		if (this.logStartupInfo) {
			new StartupInfoLogger(this.mainApplicationClass)
					.logStarted(getApplicationLog(), stopWatch);
		}
		listeners.started(context);
		// ！！！通知所有的应用runner
		callRunners(context, applicationArguments);
	}
	catch (Throwable ex) {
		handleRunFailure(context, listeners, exceptionReporters, ex);
		throw new IllegalStateException(ex);
	}
	listeners.running(context);
	return context;
}

 

private void callRunners(ApplicationContext context, ApplicationArguments args) {
	List